Spinel

Introduction of spinel
spinel is rare in nature a kind of mineral, must rely on synthetic ability system.the ratio of raw materials according to certain proportion, mixing pressure forming, adding suitable amount of pulp).by the high temperature electric furnace smelting, in the process of smelting, maintain state of micro reduction, prevent into fe2o3 feo oxidation, prevent elemental fe, after natural cooling hercynite made by sand.it under the microscope shows no uneven big crystal grain boundary (95%), similar to the glassy state.after processing to iron aluminum spinel brick, is mainly used in large-scale cement rotary kiln, instead of the chrome brick, cement kiln is used currently no cr6, + pollution.prolong the service life of furnace lining brick, magnesite chrome brick, 10-12 months hercynite spinel brick 17-18 months), greatly reduces the consumption of refractory material resources, reduce the production cost, fully implement the cement kiln without chromium production, solves the chromium pollution.hercynite represents a new generation of high performance cement rotary kiln without chrome refractory materials.
Spinel and classification process
synthetic spinel and fused two main methods are sintering method.most spinel material is made from high purity synthetic chemical and alumina grade magnesium oxide, which in shaft kiln sintering and fused in arc furnace.
Magnesium aluminum spinel belongs to a kind of aluminum and magnesium oxide, the main components in aluminum oxide and magnesium oxide.magnesium aluminum spinel has two kinds of natural formation and synthetic.natural magnesia spinel, rarely found in industry application of magnesium aluminum spinel all of them are synthetic, two main method of synthesis of magnesium aluminium spinel is a fused method and sintering process.most spinel material is made from high purity synthetic chemical and alumina grade magnesium oxide, which in shaft kiln sintering and fused in arc furnace.